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Finding the Fourth Proportional to 87,615.62, 120,909.46 and 47,329.38

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Solution

The fourth proportional to 87,615.62, 120,909.46 and 47,329.38 is: 65,314.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,615.62 : 120,909.46 = 47,329.38 : x
  2. Step 2: Convert to fraction form
    87,615.62/120,909.46 = 47,329.38/x
  3. Step 3: Cross multiply
    87,615.62x = 120,909.46 × 47,329.38
  4. Step 4: Simplify right side
    87,615.62x = 5,722,569,748.35
  5. Step 5: Solve for x
    x = 5,722,569,748.35/87,615.62
  6. Step 6: Final answer
    x = 65,314.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.